SmogRank / Countries / The Netherlands / North Holland
Most polluted cities in North Holland, The Netherlands
8 measured cities ranked by PM2.5, last 7 days. Worst: Haarlem at 11.8 µg/m³, #376 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Haarlem low-cost sensorsNorth Holland | 11.8 | |
| 2 | Medemblik North Holland | 10.2 | |
| 3 | Amsterdam North Holland | 10.1 | |
| 4 | Velserbroek North Holland | 9.8 | |
| 5 | Zaanstad North Holland | 9.3 | |
| 6 | Badhoevedorp North Holland | 8.0 | |
| 7 | Velsen-Zuid North Holland | 7.7 | |
| 8 | Purmerend North Holland | 7.1 |
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data
Estimated: cities without a monitor
North Holland cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Hoofddorp estimated | ≈ 10 µg/m³ |
| Alkmaar estimated | ≈ 9 µg/m³ |
| Hilversum estimated | ≈ 10 µg/m³ |
| Amstelveen estimated | ≈ 10 µg/m³ |
| Zaandam estimated | ≈ 10 µg/m³ |
| Hoorn estimated | ≈ 9 µg/m³ |
| Den Helder estimated | ≈ 9 µg/m³ |
| Heerhugowaard estimated | ≈ 9 µg/m³ |
| Huizen estimated | ≈ 10 µg/m³ |
| Heemskerk estimated | ≈ 10 µg/m³ |
| Beverwijk estimated | ≈ 10 µg/m³ |
| Castricum estimated | ≈ 10 µg/m³ |
| IJmuiden estimated | ≈ 10 µg/m³ |
| Nieuw-Vennep estimated | ≈ 10 µg/m³ |
| Bussum estimated | ≈ 10 µg/m³ |
| Bergen estimated | ≈ 9 µg/m³ |
| Uithoorn estimated | ≈ 10 µg/m³ |
| Heemstede estimated | ≈ 10 µg/m³ |
| Diemen estimated | ≈ 10 µg/m³ |
| Assendelft estimated | ≈ 10 µg/m³ |
| Heiloo estimated | ≈ 9 µg/m³ |
| Aalsmeer estimated | ≈ 10 µg/m³ |
| Volendam estimated | ≈ 10 µg/m³ |
| Schagen estimated | ≈ 9 µg/m³ |
| Weesp estimated | ≈ 10 µg/m³ |
| Enkhuizen estimated | ≈ 9 µg/m³ |
| Krommenie estimated | ≈ 10 µg/m³ |
| Naarden estimated | ≈ 10 µg/m³ |
| Zandvoort estimated | ≈ 9 µg/m³ |
| Julianadorp estimated | ≈ 9 µg/m³ |
Updated 2026-10-01 11:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.